Motion Tracking System in Surgical Training

Abstract

Introduction: Simulation technology is evolving and becoming the focus of attention in surgical training. The development of this technology in assessing open surgical skills is far behind when compared to minimally invasive surgery (MIS) training. Surgical skills such as suturing and tying surgical knots are assessed by an observational tool. It is labour-intensive and time-consuming. Therefore, we explored the potential use of motion tracking system as a non-observational assessment tool for basic surgical skills. Methods: We established a motion tracking system using a device called the Patriot™ (Polhemus Inc., Colchester, VT) and software created by our co-supervisor which generates numerical metrics. We validated this system and applied it to the proficiency-based skill assessment. Results: The Patriot™ system was able to differentiate between the different levels of expertise (construct validity) and demonstrated significant correlation with the classical assessment tool (concurrent validity) in open surgical skills. We demonstrated the potential application of this system in mapping of trainees' surgical proficiency. Conclusion: Overall, we have established the validity of motion tracking in assessing the fluidity of the hands when completing fundamental surgical skills. Our research took a step forward beyond the validation paradigm by demonstrating its potential application in the surgical training programme.